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The existing SINT_TO_FP code for i32 -> float/double conversion was disabled because it relied on broken EXTSW_32/STD_32 instruction definitions. The original intent had been to enable these 64-bit instructions to be used on CPUs that support them even in 32-bit mode. Unfortunately, this form of lying to the infrastructure was buggy (as explained in the FIXME comment) and had therefore been disabled. This re-enables this functionality, using regular DAG nodes, but only when compiling in 64-bit mode. The old STD_32/EXTSW_32 definitions (which were dead) are removed. llvm-svn: 178438 |
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